[gardener-extension-networking-cilium]

Improvements

• [OPERATOR] Cilium is now running on v1.8.0 (#13, @zanetworker)
• [OPERATOR] Vendored gardener v1.7.0. (#12, @plkokanov)
  • Added implementation for Restore and Migrate operations.
• [OPERATOR] Release now points to the right slack channel. (#11, @zanetworker)